Tesamorelin vs Sermorelin
Medically reviewed by the Rite Aid Health Team · Last updated July 2, 2026
Tesamorelin and sermorelin both work through the growth-hormone axis, but they are not interchangeable. Tesamorelin is the approval-backed option for visceral fat in a specific medical context; sermorelin is the gentler compounded option discussed for sleep, recovery, and aging goals.
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At a glance
| Tesamorelin | Sermorelin | |
|---|---|---|
| Class | Stabilized GHRH analog | GHRH(1-29) analog |
| Best-evidenced use | Visceral fat (approved) | Anti-aging, recovery, sleep |
| FDA status | Approved (Egrifta) | Compounded (formerly Geref) |
| Cadence | Daily | Nightly |
| Signal | Stronger, longer | Milder, shorter |
How each works
Both tell the pituitary to release the body's own growth hormone, which raises IGF-1. Tesamorelin is the more potent, trial-backed option; sermorelin is the older, gentler one with a long compounding history.
Who each suits
Tesamorelin has the strongest evidence for visceral fat. Sermorelin is often chosen for general anti-aging, sleep, and recovery goals.
Can you use them together?
They act on the same axis, so they are alternatives rather than a stack — you would generally pick one.
Related
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For general education only — not medical advice or a treatment recommendation. Peptides are not a substitute for care from a licensed provider. Talk to a qualified healthcare professional before you start, stop, or change any peptide, medication, or supplement.
FAQ
Tesamorelin — its visceral-fat indication is backed by human trials, whereas sermorelin's use rests more on its long clinical history.
Yes. IGF-1 is the blood marker used to confirm either one is working.